81 lines
2.7 KiB
Python
81 lines
2.7 KiB
Python
import inspect
|
|
|
|
from orchestra.apps.accounts.models import Account
|
|
|
|
|
|
def get_related_objects(origin, max_depth=2):
|
|
"""
|
|
Introspects origin object and return the first related service object
|
|
|
|
WARNING this is NOT an exhaustive search but a compromise between cost and
|
|
flexibility. A more comprehensive approach may be considered if
|
|
a use-case calls for it.
|
|
"""
|
|
|
|
def related_iterator(node):
|
|
for field in node._meta.virtual_fields:
|
|
if hasattr(field, 'ct_field'):
|
|
yield getattr(node, field.name)
|
|
for field in node._meta.fields:
|
|
if field.rel:
|
|
yield getattr(node, field.name)
|
|
|
|
# BFS model relation transversal
|
|
queue = [[origin]]
|
|
while queue:
|
|
models = queue.pop(0)
|
|
if len(models) > max_depth:
|
|
return None
|
|
node = models[-1]
|
|
if len(models) > 1:
|
|
if hasattr(node, 'account') or isinstance(node, Account):
|
|
return node
|
|
for related in related_iterator(node):
|
|
if related and related not in models:
|
|
new_models = list(models)
|
|
new_models.append(related)
|
|
queue.append(new_models)
|
|
|
|
def get_register_or_cancel_events(porders, ini, end):
|
|
assert ini <= end, "ini > end"
|
|
CANCEL = 'cancel'
|
|
REGISTER = 'register'
|
|
changes = {}
|
|
counter = 0
|
|
for order in porders:
|
|
if order.cancelled_on:
|
|
cancel = order.cancelled_on
|
|
if order.billed_until and order.cancelled_on < order.billed_until:
|
|
cancel = order.billed_until
|
|
if cancel > ini and cancel < end:
|
|
changes.setdefault(cancel, [])
|
|
changes[cancel].append(CANCEL)
|
|
if order.registered_on <= ini:
|
|
counter += 1
|
|
elif order.registered_on < end:
|
|
changes.setdefault(order.registered_on, [])
|
|
changes[order.registered_on].append(REGISTER)
|
|
pointer = ini
|
|
total = float((end-ini).days)
|
|
for date in sorted(changes.keys()):
|
|
yield counter, (date-pointer).days/total
|
|
for change in changes[date]:
|
|
if change is CANCEL:
|
|
counter -= 1
|
|
else:
|
|
counter += 1
|
|
pointer = date
|
|
yield counter, (end-pointer).days/total
|
|
|
|
|
|
def get_register_or_renew_events(handler, porders, ini, end):
|
|
total = float((end-ini).days)
|
|
for sini, send in handler.get_pricing_slots(ini, end):
|
|
counter = 0
|
|
for order in porders:
|
|
if order.registered_on >= sini and order.registered_on < send:
|
|
counter += 1
|
|
elif order.billed_until > send or order.cancelled_on > send:
|
|
counter += 1
|
|
yield counter, (send-sini)/total
|